Parent Directory| Name | Size | Last Modified |
|---|---|---|
 0001564590-21-056103-index-headers.html | 2021-11-10 14:19:42 | |
| 0001564590-21-056103-index.html | 2021-11-10 14:19:42 | |
| 0001564590-21-056103.txt | 2021-11-10 14:19:42 | |
 0001564590-21-056103-xbrl.zip | 341084 | 2021-11-10 14:19:42 |
| FilingSummary.xml | 60970 | 2021-11-10 14:19:42 |
| Financial_Report.xlsx | 150720 | 2021-11-10 14:19:42 |
| fusb-10q_20210930.htm | 7780068 | 2021-11-10 14:19:42 |
| fusb-10q_20210930_htm.xml | 9012667 | 2021-11-10 14:19:42 |
| fusb-20210930.xsd | 80151 | 2021-11-10 14:19:42 |
| fusb-20210930_cal.xml | 94677 | 2021-11-10 14:19:42 |
| fusb-20210930_def.xml | 322312 | 2021-11-10 14:19:42 |
| fusb-20210930_lab.xml | 638090 | 2021-11-10 14:19:42 |
| fusb-20210930_pre.xml | 557206 | 2021-11-10 14:19:42 |
| fusb-ex311_9.htm | 13472 | 2021-11-10 14:19:42 |
| fusb-ex312_8.htm | 14758 | 2021-11-10 14:19:42 |
| fusb-ex32_7.htm | 11286 | 2021-11-10 14:19:42 |
| MetaLinks.json | 954775 | 2021-11-10 14:19:42 |
| R1.htm | 52187 | 2021-11-10 14:19:42 |
| R10.htm | 10586 | 2021-11-10 14:19:42 |
| R11.htm | 84195 | 2021-11-10 14:19:42 |
| R12.htm | 29616 | 2021-11-10 14:19:42 |
| R13.htm | 429695 | 2021-11-10 14:19:42 |
| R14.htm | 1686384 | 2021-11-10 14:19:42 |
| R15.htm | 75862 | 2021-11-10 14:19:42 |
| R16.htm | 38986 | 2021-11-10 14:19:42 |
| R17.htm | 27949 | 2021-11-10 14:19:42 |
| R18.htm | 8791 | 2021-11-10 14:19:42 |
| R19.htm | 8124 | 2021-11-10 14:19:42 |
| R2.htm | 98630 | 2021-11-10 14:19:42 |
| R20.htm | 74031 | 2021-11-10 14:19:42 |
| R21.htm | 93142 | 2021-11-10 14:19:42 |
| R22.htm | 147913 | 2021-11-10 14:19:42 |
| R23.htm | 543669 | 2021-11-10 14:19:42 |
| R24.htm | 171204 | 2021-11-10 14:19:42 |
| R25.htm | 28060 | 2021-11-10 14:19:42 |
| R26.htm | 444587 | 2021-11-10 14:19:42 |
| R27.htm | 94645 | 2021-11-10 14:19:42 |
| R28.htm | 70172 | 2021-11-10 14:19:42 |
| R29.htm | 24941 | 2021-11-10 14:19:42 |
| R3.htm | 16170 | 2021-11-10 14:19:42 |
| R30.htm | 427712 | 2021-11-10 14:19:42 |
| R31.htm | 1663523 | 2021-11-10 14:19:42 |
| R32.htm | 74003 | 2021-11-10 14:19:42 |
| R33.htm | 37305 | 2021-11-10 14:19:42 |
| R34.htm | 16264 | 2021-11-10 14:19:42 |
| R35.htm | 72771 | 2021-11-10 14:19:42 |
| R36.htm | 89863 | 2021-11-10 14:19:42 |
| R37.htm | 143857 | 2021-11-10 14:19:42 |
| R38.htm | 538616 | 2021-11-10 14:19:42 |
| R39.htm | 169594 | 2021-11-10 14:19:42 |
| R4.htm | 94817 | 2021-11-10 14:19:42 |
| R40.htm | 20127 | 2021-11-10 14:19:42 |
| R41.htm | 425549 | 2021-11-10 14:19:42 |
| R42.htm | 4543 | 2021-11-10 14:19:42 |
| R43.htm | 35212 | 2021-11-10 14:19:42 |
| R44.htm | 13993 | 2021-11-10 14:19:42 |
| R45.htm | 15588 | 2021-11-10 14:19:42 |
| R46.htm | 41017 | 2021-11-10 14:19:42 |
| R47.htm | 52469 | 2021-11-10 14:19:42 |
| R48.htm | 16336 | 2021-11-10 14:19:42 |
| R49.htm | 30672 | 2021-11-10 14:19:42 |
| R5.htm | 33934 | 2021-11-10 14:19:42 |
| R50.htm | 59596 | 2021-11-10 14:19:42 |
| R51.htm | 6802 | 2021-11-10 14:19:42 |
| R52.htm | 103775 | 2021-11-10 14:19:42 |
| R53.htm | 73689 | 2021-11-10 14:19:42 |
| R54.htm | 105200 | 2021-11-10 14:19:42 |
| R55.htm | 85319 | 2021-11-10 14:19:42 |
| R56.htm | 18278 | 2021-11-10 14:19:42 |
| R57.htm | 42797 | 2021-11-10 14:19:42 |
| R58.htm | 21485 | 2021-11-10 14:19:42 |
| R59.htm | 17256 | 2021-11-10 14:19:42 |
| R6.htm | 10578 | 2021-11-10 14:19:42 |
| R60.htm | 6245 | 2021-11-10 14:19:42 |
| R61.htm | 18484 | 2021-11-10 14:19:42 |
| R62.htm | 14166 | 2021-11-10 14:19:42 |
| R63.htm | 14047 | 2021-11-10 14:19:42 |
| R64.htm | 15309 | 2021-11-10 14:19:42 |
| R65.htm | 43268 | 2021-11-10 14:19:42 |
| R66.htm | 15174 | 2021-11-10 14:19:42 |
| R67.htm | 8748 | 2021-11-10 14:19:42 |
| R68.htm | 11179 | 2021-11-10 14:19:42 |
| R69.htm | 8492 | 2021-11-10 14:19:42 |
| R7.htm | 72356 | 2021-11-10 14:19:42 |
| R70.htm | 25330 | 2021-11-10 14:19:42 |
| R71.htm | 25808 | 2021-11-10 14:19:42 |
| R72.htm | 11507 | 2021-11-10 14:19:42 |
| R73.htm | 19680 | 2021-11-10 14:19:42 |
| R74.htm | 20459 | 2021-11-10 14:19:42 |
| R75.htm | 9136 | 2021-11-10 14:19:42 |
| R76.htm | 20923 | 2021-11-10 14:19:42 |
| R77.htm | 7064 | 2021-11-10 14:19:42 |
| R78.htm | 7574 | 2021-11-10 14:19:42 |
| R79.htm | 12251 | 2021-11-10 14:19:42 |
| R8.htm | 4822 | 2021-11-10 14:19:42 |
| R80.htm | 4368 | 2021-11-10 14:19:42 |
| R81.htm | 90125 | 2021-11-10 14:19:42 |
| R82.htm | 17035 | 2021-11-10 14:19:42 |
| R83.htm | 15307 | 2021-11-10 14:19:42 |
| R84.htm | 29230 | 2021-11-10 14:19:42 |
| R85.htm | 10820 | 2021-11-10 14:19:42 |
| R86.htm | 4726 | 2021-11-10 14:19:42 |
| R87.htm | 6284 | 2021-11-10 14:19:42 |
| R88.htm | 35114 | 2021-11-10 14:19:42 |
| R89.htm | 11734 | 2021-11-10 14:19:42 |
| R9.htm | 104437 | 2021-11-10 14:19:42 |
| R90.htm | 17644 | 2021-11-10 14:19:42 |
| R91.htm | 40182 | 2021-11-10 14:19:42 |
| report.css | 2768 | 2021-11-10 14:19:42 |
| Show.js | 1086 | 2021-11-10 14:19:42 |